145281599 has 2 divisors, whose sum is σ = 145281600. Its totient is φ = 145281598.

The previous prime is 145281569. The next prime is 145281611. The reversal of 145281599 is 995182541.

145281599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145281599 - 2¹⁶ = 145216063 is a prime.

It is a super-2 number, since 2×145281599² = 42213486015993602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145281509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72640799 + 72640800.

It is an arithmetic number, because the mean of its divisors is an integer number (72640800).

Almost surely, 2^145281599 is an apocalyptic number.

145281599 is a deficient number, since it is larger than the sum of its proper divisors (1).

145281599 is an equidigital number, since it uses as much as digits as its factorization.

145281599 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 44.

The square root of 145281599 is about 12053.2816693214. The cubic root of 145281599 is about 525.6986604503.

The spelling of 145281599 in words is "one hundred forty-five million, two hundred eighty-one thousand, five hundred ninety-nine".